CN104714577A - Temperature and humidity measuring and control device, system and method - Google Patents
Temperature and humidity measuring and control device, system and method Download PDFInfo
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Abstract
The invention provides a temperature and humidity measuring and control device, system and method. Multiple temperature and humidity probes and a host are adopted, wherein the temperature and humidity probes are capable of being arranged at different positions and used for monitoring the temperature and humidity information of the environment where the probes are located, and the host is connected with the multiple temperature and humidity probes and used for obtaining the temperature and humidity information of all the temperature and humidity probes and conducting control processing according to the temperature and humidity information. The multiple probes are used for monitoring the environment of a warehouse, the host is used for processing the monitored environment of the warehouse, in this way, the whole environment can be accurately covered, multiple temperature and humidity measuring and control instruments are not needed, networking can be easy, and investment cost is greatly saved. Moreover, the environment parameters such as the temperature and the humidity and the like can be displayed and broadcast through voice. When the current environment parameters exceed a limit range, an alarm is given out, and/or the ventilation value of a ventilation device is controlled, the current environment parameters are changed, manual control is not needed, work efficiency is improved, and the real-time property is good.
Description
Technical field
The present invention relates to instrument field, in particular to temperature and humidity filed device, system and temperature and humidity filed method.
Background technology
Troops depot is the important base of deposit, keeping, supply corps equipment material, and this warehouse environment has material impact to weaponry.Current promote IT application build and develop scientific ensure the background seen under, adopt advanced management means to manage this warehouse (as monitoring warehouse environment etc.) for raising warehouse equipment and ensure that scientific management level and information-based program tool are of great significance.
At present, along with modernization, the information-based raising required of troops depot's management, warehouse environment monitoring work is more and more important, and based on this, correlation technique provides a kind of wireless supervisory control system, comprises temperature and humidity filed instrument, radio receiving transmitting module and Surveillance center; The specific works process of this wireless supervisory control system is as follows: temperature and humidity filed instrument gathers the current humiture information of troops depot, and be sent to Surveillance center by radio receiving transmitting module, so that the staff of Surveillance center checks this information, and process according to the ambient conditions of this information to warehouse.
In above-mentioned wireless supervisory control system, single-point temperature-humidity monitoring mode (namely adopting an above-mentioned temperature and humidity filed instrument) is generally adopted to monitor the whole environment of reservoir area at present, but, because storage area is larger, the mode of single-point accurately can not cover the whole environment of reservoir area, to make test result inaccurate; In order to solve the problem, correlation technique provides a kind of settling mode, namely uses multiple stage temperature and humidity filed instrument, but, use the cost of multiple stage temperature and humidity filed instrument higher, and between multiple stage temperature and humidity filed instrument, networking is complicated and difficult.
Inventor finds under study for action, and the mode cost of above-mentioned use multiple stage temperature and humidity filed instrument is higher, for this problem, not yet proposes effective solution at present.
Summary of the invention
The object of the present invention is to provide temperature and humidity filed device, system and temperature and humidity filed method, use the environment in the whole warehouse of multiple probe monitors, without the need to using multiple temperature and humidity filed instrument, making networking easily, and greatly saved input cost.
First aspect, embodiments provides a kind of temperature and humidity filed device, comprising:
Multiple humiture probe being arranged at diverse location, for monitoring the humiture information of place environment, wherein, humiture information at least comprises one of following: temperature, humidity, medial temperature or medial humidity;
Popping one's head in the main frame be all connected with multiple humiture, for obtaining the humiture information of each humiture probe monitors, carrying out control treatment according to humiture information.
In conjunction with first aspect, embodiments provide the first possible embodiment of first aspect, wherein, each humiture probe includes: Temperature Humidity Sensor and microcontroller; Microcontroller, the Monitoring instruction for being sent by main frame converts the steering order of Temperature Humidity Sensor identification to;
Temperature Humidity Sensor, for according to steering order, gathers temperature and/or the humidity of place environment, and temperature and/or humidity is sent to microcontroller.
In conjunction with the first possible embodiment of first aspect, embodiments provide the embodiment that the second of first aspect is possible, wherein, main frame comprises: the main control unit be connected with microcontroller, and the information Tip element be connected with main control unit; Main control unit is used for obtaining temperature and/or humidity from microcontroller, according to the temperature computation medial temperature of specified quantity, or calculates medial humidity according to the humidity of specified quantity; Calculate the related information of humiture information; The humiture information that information Tip element is used for main control unit obtains is prompted to user.
In conjunction with the embodiment that the second of first aspect is possible, embodiments provide the third possible embodiment of first aspect, wherein, main frame also comprises: the storage unit be electrically connected with main control unit, for the threshold parameter of correspondence each humiture probe storage humiture information and setting; Wherein, threshold parameter comprises: temperature threshold, humidity threshold;
Main control unit comprises: comparer, for humiture information and corresponding threshold parameter being compared; Ventilation control unit, controls ventilation unit for the comparative result obtained according to comparer.
In conjunction with the third possible embodiment of first aspect, embodiments provide the 4th kind of possible embodiment of first aspect, wherein, main frame also comprises: the time circuit be electrically connected with main control unit by iic bus, for recording temperature and/or acquisition time corresponding to humidity;
The crystal oscillator external with time circuit, for providing basic clock signal for time circuit; And the standby power supply to be electrically connected with time circuit, in order to being that time circuit is powered when abnormal electrical power supply.
In conjunction with the possible embodiment of the second of first aspect to the arbitrary a kind of possible embodiment in the 4th kind of possible embodiment of first aspect, embodiments provide the 5th kind of possible embodiment of first aspect, wherein, main frame also comprises the supply module be electrically connected with main control unit, and supply module comprises:
Pop one's head in main control unit and humiture respectively the mu balanced circuit be electrically connected, the supply voltage for being provided by externally fed equipment is adjusted to main control unit and the voltage needed for humiture probe, is main control unit and the power supply of humiture probe;
The management of charging and discharging circuit be electrically connected with mu balanced circuit, and the rechargeable battery be electrically connected with management of charging and discharging circuit; And the battery capacity indication lamp to be electrically connected with management of charging and discharging circuit, for lighting when rechargeable battery charges, be full of rear extinguishing.
Second aspect, the embodiment of the present invention additionally provides a kind of humiture observation and control system, comprises the temperature and humidity filed device any one of first aspect, also comprises: server and control terminal;
Temperature and humidity filed device by server and control terminal wireless connections, for humiture information is sent to control terminal by server;
Control terminal receives humiture information, and controls the duty of temperature and humidity filed device according to the state of humiture information.
In conjunction with second aspect, embodiments provide the first possible embodiment of second aspect, wherein, this humiture observation and control system also comprises ventilation unit and warning device;
Ventilation unit and warning device are all electrically connected with temperature and humidity filed device; Main frame in temperature and humidity filed device is also for comparing humiture information and parameter preset information, and when the result compared reaches alarm threshold, trigger alarm device is reported to the police, and controls the unlatching of ventilation unit and/or the wind speed size of adjustment ventilation unit.
The third aspect, the embodiment of the present invention additionally provides a kind of temperature and humidity filed method, and described method adopts the temperature and humidity filed device any one of first aspect to carry out, and described method comprises:
Main frame obtains the address information of multiple humiture probe, and sets up humiture probe information table according to address information;
Current humiture information to the request message of the current humiture information of preset address information sending request in humiture probe information table, to make humiture pop one's head according to request message, is sent to main frame by main frame one by one;
The current humiture information that each humiture probe sends added up by main frame, carries out control treatment according to humiture information.
In conjunction with the third aspect, embodiments provide the first possible embodiment of the third aspect, wherein, the address information that main frame obtains humiture probe comprises:
After temperature and humidity filed device powers on, humiture probe arranges the current state of himself and is sent to main frame by arranging rear current state information, obtains current state information to make main frame; Wherein, current state information comprises address information.
The temperature and humidity filed device that the embodiment of the present invention provides, system and temperature and humidity filed method, adopt multiple humiture probe being arranged at diverse location, for monitoring the humiture information of place environment, wherein, humiture information at least comprises one of following: temperature, humidity, medial temperature or medial humidity; To pop one's head in the main frame be all connected with multiple humiture, for obtaining the humiture information of each humiture probe monitors, control treatment is carried out according to humiture information, it uses the environment in the whole warehouse of multiple probe monitors, and is processed by the warehouse environment of main frame to monitoring, can cover whole environment accurately, and, without the need to using multiple temperature and humidity filed instrument, make networking easily, and greatly save input cost.
Further, the temperature and humidity filed device that the embodiment of the present invention provides, system and temperature and humidity filed method, can carry out showing and voice broadcast respectively by environmental parameters such as multiple humiture probe acquires temperature, humidity, and the environmental parameter of collection and preset value are contrasted, and exceed limited range alarm in current environment parameter, and/or control ventilation unit ventilation, change current environmental parameter value, without the need to controlling manually, improve work efficiency and real-time is better.
For making above-mentioned purpose of the present invention, feature and advantage become apparent, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present invention, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows the structural representation of a kind of temperature and humidity filed device that the embodiment of the present invention provides;
Fig. 2 shows the frame diagram of a kind of temperature and humidity filed device that the embodiment of the present invention provides;
Fig. 3 shows the theory diagram of humiture probe in a kind of temperature and humidity filed device that the embodiment of the present invention provides;
Fig. 4 shows the theory diagram of main frame in a kind of temperature and humidity filed device that the embodiment of the present invention provides;
Fig. 5 shows the structural representation of a kind of humiture observation and control system that the embodiment of the present invention provides;
Fig. 6 shows the process flow diagram of a kind of temperature and humidity filed method that the embodiment of the present invention provides;
Fig. 7 shows self-defining communication protocol frame assumption diagram in a kind of temperature and humidity filed method that the embodiment of the present invention provides.
Main element symbol description:
11, humiture probe (as 11a, 11b, 11c and 11d); 12, main frame; 101, microcontroller; 102, bus interface circuit; 103, Temperature Humidity Sensor; 104, main control unit; 105, display unit; 106, supply module, 107, storage unit; 108, time circuit; 109, output control unit; 110, warning device; 111, battery capacity indication lamp; 112, management of charging and discharging circuit; 113, transfer bus; 202, ventilation unit; 21, server; 22, control terminal.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.The assembly of the embodiment of the present invention describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiments of the invention provided in the accompanying drawings and the claimed scope of the present invention of not intended to be limiting, but selected embodiment of the present invention is only represented.Based on embodiments of the invention, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
The invention provides a kind of temperature and humidity filed device, system and temperature and humidity filed method, this device has multiple spot temperature and humidity monitor function, compared with above-mentioned two kinds of equal existing defects of monitoring mode to troops depot of the prior art, it uses the environment in the whole warehouse of multiple probe monitors, and is processed by the warehouse gold of main frame 12 to monitoring, can cover whole environment accurately, and, without the need to using multiple temperature and humidity filed instrument, make networking easily, and greatly save input cost.
Further, the present invention can the humiture information of each probe of real-time query, the related information of mean value and humiture information data, and this related information comprises the information such as the stored record number of humiture information data, memory gap and battery allowance.Concrete, specific implementation of the present invention is as follows, with reference to figure 1 and Fig. 2,
Embodiments provide a kind of temperature and humidity filed device, comprise: multiple humiture probe 11 (being only described for a humiture probe in figure) being arranged at diverse location, for monitoring the humiture information of place environment, wherein, humiture information at least comprises one of following: temperature, humidity, medial temperature or medial humidity;
Popping one's head in 11 main frames be all connected 12 with multiple humiture, for obtaining the humiture information of each humiture probe 11 monitoring, carrying out control treatment according to humiture information.
The said humiture probe 11 of the present embodiment is connected by transfer bus 113 with main frame 12, concrete, this transfer bus 113 can be RS485 bus, humiture data (the humiture information namely gathered) are sent to main frame 12, data acquisition and process by RS485 bus according to custom protocol by multiple humiture probe 11.Then, main frame 12 stores the data of each humiture probe 11 according to time series and shows.The data value that each humiture probe 11 also gathers by described main frame 12 and preset data value (this preset data value is preferably a scope) contrast, if the data value of this collection exceedes the alarm threshold pre-set and (namely exceeds in the scope of preset data value, namely temperature/humidity is greater than maximal value, still minimum value is less than), then main frame 12 can generate alarm command, and control warning device 110 and report to the police, simultaneously according to steering logic output switch amount signal, drive air-conditioning or dehumidifier work, if environment reaches predetermined index (data value namely gathered is within the scope of preset data value), then quit work.
Humiture probe 11 in the present embodiment is multiple, as being 4, and 6 and 8, preferably be less than 32, when its quantity controls within 32, the collision rate of humiture probe 11, lower than 5%, can be controlled this humiture probe 11 by main frame 12 preferably.
Further, with reference to figure 3, in this temperature and humidity filed device, each humiture probe 11 includes: Temperature Humidity Sensor 103 and microcontroller 101; Microcontroller 101, the Monitoring instruction for being sent by main frame 12 converts the steering order that Temperature Humidity Sensor 103 identifies to; Temperature Humidity Sensor 103, for according to steering order, gathers temperature and/or the humidity of place environment, and temperature and/or humidity is sent to described microcontroller 101.
Concrete, the Monitoring instruction that microcontroller 101 Receiving Host sends, and Monitoring instruction is resolved, and directly can control according to the instruction generation after resolving the acquisition instructions that Temperature Humidity Sensor carries out temperature and/or humidity, Temperature Humidity Sensor is then according to this acquisition instructions, gather temperature and/or the humidity of place environment, and be sent to microcontroller 101.
Further, with reference to figure 4, in this temperature and humidity filed device, main frame 12 comprises: the main control unit 104 be connected with microcontroller 101, and the information Tip element be connected with main control unit 104; Main control unit 104, for from microcontroller 101 temperature and/or humidity, according to the described temperature computation medial temperature of specified quantity, or calculates medial humidity according to the described humidity of specified quantity; Calculate the related information of described humiture information; The humiture information that information Tip element is used for main control unit 104 to obtain is prompted to user.
Concrete, main control unit 104 can by Preset Time or the temperature of predetermined number and/or humidity calculating mean value, and store, so that subsequent user can check humiture information by the display unit 105 on main frame 12, as temperature value, humidity value, the mean value of the humidity in the mean value of the temperature in Preset Time or Preset Time; Wherein, Preset Time and predetermined number can be arranged at random by user, and the present invention does not do concrete restriction to this.
It should be noted that, above-mentioned main control unit 104 calculates medial humidity, medial temperature and related information etc. and also can be calculated by microcontroller 101, and main control unit 104 only needs control microcontroller 101 and Temperature Humidity Sensor 103 to carry out the data acquisition of said temperature and/humidity.
Concrete, information Tip element, can comprise display unit 105, and it can show the humiture information that microcontroller 101 sends, and also can comprise voice playing unit, report etc. for the humiture information sent by microcontroller 101.
Temperature and humidity filed device provided by the invention, can to the humiture real time data inquiry of each probe, mean value inquiry; Facility information is inquired about, and comprises the information such as stored record number, memory gap and battery allowance; Historical record obtains and deletes, and can obtain the record of maximum 60000, and supports the whole writing function of erasing.Operation system setting, comprises the parameter reset equipment such as equipment time, device number, memory gap.
Concrete, humiture probe 11 comprises Temperature Humidity Sensor 103 and microcontroller 101; Concrete, Temperature Humidity Sensor 103 is preferably Temperature Humidity Sensor 103 that model is SHT21, microcontroller 101 is preferably the single-chip microcomputer that model is C8051F320, and bus interface circuit 102 comprises bus and bus interface; Bus interface is preferably RS-485 interface, and bus is preferably iic bus.Fig. 2 gives the theory diagram of humiture probe 11, and as shown in Figure 2, humiture probe 11 is primarily of Temperature Humidity Sensor 103SHT21, single-chip microcomputer C8051F320 and 485 bus interface circuits 102 (i.e. bus interface circuit 102) composition.Temperature Humidity Sensor 103SHT21 outputs signal as iic bus form, Temperature Humidity Sensor 103SHT21 adopts SLAVE (from machine) pattern, can be connected with the direct of single-chip microcomputer C8051F320 (namely Temperature Humidity Sensor 103SHT21 is connected with the direct of single-chip microcomputer C8051F320 by data line SDA and clock cable SCL) by the IIC interface of kernel control module, and in the process of above-mentioned connection, need to apply a pull-up resistor Rp on SDA line, avoid the data of bus transfer to produce interference.
Wherein, HT21 is the high-accuracy temperature-humidity sensor 103 of Switzerland's import, single-chip microcomputer C8051F320 is the high-level efficiency microcontroller 101 of 8 single command cycles of Silicon Laboratories Company, internal support Hardware I IC bus, and connecting sensor is very convenient; UART (the Universal Asynchronous Receiver Transmitter that single-chip microcomputer is built-in, UART Universal Asynchronous Receiver Transmitter) serial ports is directly connected with 485 interface circuits, its Configuration of baud rate is 9600, in order to realize the communication of humiture probe 11 and main frame 12, wherein, communication protocol adopts custom protocol.
In the present embodiment, Temperature Humidity Sensor 103 passes through the mode output digit signals (namely exporting humiture information) of iic bus, without the need to compensating the digital signal exported, making transmission reliable and stablizing.The group-net communication of C8051F320 single-chip microcomputer then data acquisition (i.e. the collection of humiture information) and RS485 bus.
Below in conjunction with Fig. 4, the main frame in temperature and humidity filed device provided by the invention is specifically described:
Concrete, Fig. 4 gives the theory diagram of main frame 12.As shown in Figure 4, main frame 12 comprises main control unit 104, display unit 105, time circuit 108, storage unit 107, output control unit 109 and power module composition.
Main control unit 104 selects the C8051F340 single-chip microcomputer of Silicon Laboratories company to be microcontroller 101, the multiple peripheral hardwares such as the built-in iic bus of this single-chip microcomputer, spi bus, UART bus, AD (comprising AD circuit simulating signal being converted to digital signal and DA circuit digital signal being converted to simulating signal), timer, decrease the application of peripheral components.
Concrete, display module adopts LCD19264 lattice lcd screen, and communication mode adopts parallel mode, can show the humiture information of multiple humiture probe 11.
Further, in this temperature and humidity filed device, main frame 12 also comprises: the storage unit 107 be electrically connected with main control unit 104, stores the threshold parameter of humiture information and setting for each humiture probe 11 of correspondence; Wherein, threshold parameter comprises: temperature threshold, humidity threshold; Main control unit 104 comprises: comparer, for humiture information and corresponding threshold parameter being compared; Ventilation control unit, controls ventilation unit 202 for the comparative result obtained according to comparer.
Preferably, storage unit 107 is electrically connected with main control unit 104 by SPI interface.Concrete, memory circuit (i.e. storage unit 107) adopts W25X80-1M as data buffer storage solid-state memory Flash, adopt SPI mode to be connected with main control singlechip (i.e. main control unit 104), data can be stored and reach more than 60000, meet the requirement of data record.
And output control unit 109 (i.e. ventilation control unit) adopts 2 way switch amounts to export, output driving circuit design adopts the form of light-coupled isolation and NPN (i.e. NPN type triode) large power triode, ensure that circuit safety.
Further, in this temperature and humidity filed device, bus interface circuit 102 comprises iic bus, and main frame 12 also comprises: the time circuit 108 be electrically connected with main control unit 104 by iic bus, for recording temperature and/or acquisition time corresponding to humidity information;
The crystal oscillator external with time circuit 108, for providing basic clock signal for time circuit 108; And the standby power supply to be electrically connected with time circuit 108, in order to being that time circuit 108 is powered when abnormal electrical power supply.
Concrete, time circuit 108RTC (Real-Time Clock, real-time timepiece chip) adopts PCF8563 as time chip, adopts iic bus to communicate with C8051F340 single-chip microcomputer.In addition, this chip needs external 32.768K crystal oscillator (i.e. external quartz-crystal resonator, coordinates with other element and produce full sized pules signal, for providing basic clock signal for described time circuit 108), and with 1220 button cells as standby power supply, uninterrupted when ensureing.
Further, in this temperature and humidity filed device, main frame 12 also comprises the supply module 106 be electrically connected with main control unit 104, supply module 106 comprises: 11 mu balanced circuits be electrically connected of popping one's head in main control unit 104 and humiture respectively, supply voltage for being provided by externally fed equipment is adjusted to main control unit 104 and the voltage of humiture probe needed for 11, with thinking main control unit 104 and humiture probe 11 power supply;
The management of charging and discharging circuit 112 be electrically connected with mu balanced circuit, and the rechargeable battery be electrically connected with management of charging and discharging circuit 112; And the battery capacity indication lamp 111 to be electrically connected with management of charging and discharging circuit 112, for lighting when rechargeable battery charges, be full of rear extinguishing.
Concrete, supply module 106 mainly comprises mu balanced circuit, lithium battery and management of charging and discharging circuit 112, battery capacity indication lamp 111.This temperature and humidity filed device power-supply service is 3.3V and 5V two kinds of voltages, first the externally fed 8-24V of equipment realizes being depressurized to 5V by switching regulator LM2575, voltage after step-down is divided into two-way to export, one tunnel is used for main frame 12 and liquid crystal display (voltage is down to 3.3V), and another road is used for lithium cell charging.Charging and discharging lithium battery management circuit 112 adopts LTC4054 chip, and is designed with charging indicator light 111, and during charging, pilot lamp 111 lights, and after being full of, automatic distinguishing, need not intervene by main control unit 104.Whole electric power system adopts housing radiating mode, and because charging current is about 300mA, the heat of generation is little, heat dissipation design that need not be extra, and actual test shows, on measuring accuracy without impact.
In addition, display unit 105 is also for showing the time corresponding to humiture information of multiple humiture probe 11, the storage number of humiture information and the surplus etc. of main frame 12 reserve battery.Further, the related information of above-mentioned information and humiture information.
The present invention, for solving bulk storage plant multidrop environment Inspect and control problem, invents a kind of brand-new Multi probe temperature and humidity filed device.The object of the present invention is to provide a kind of comprehensive measuring and controlling equipment with Multi probe, humiture one, output control.The design of this equipment, based on RS485 agreement, can realize the measurement of multidrop environment temperature, humidity, and data show, and data report and the function such as storage; Equipment built-in lithium battery, when outside dump, uninterruptedly realizes environmental monitoring; Measure and control device adopts two RS485 bus work.Humiture probe 11 adopts RS485 bus and custom protocol to be interconnected, and main frame 12 realizes Long-distance Control and data acquisition by upper computer software, has good versatility and extensibility.
Below in conjunction with Fig. 5, humiture observation and control system provided by the invention is described:
Present invention also offers a kind of humiture observation and control system, comprise above-mentioned temperature and humidity filed device, also comprise: server 21 and control terminal 22;
Temperature and humidity filed device passes through server 21 and control terminal 22 wireless connections, for the humiture information of collection is sent to control terminal 22 by server 21;
Control terminal 22 receives humiture information, and controls the duty of described temperature and humidity filed device according to the state of described humiture information.
Concrete, this humiture observation and control system mainly comprises temperature and humidity filed device and control terminal 22, and temperature and humidity filed device comprises (quantity of this humiture probe 11 is less than 32) of some humitures probe 11 and main frame 12 forms; Wherein, control terminal 22 completes collection and the storage of data by upper computer software, and controls temperature and humidity filed device according to this humiture information.
Preferably, control terminal 22 can be intelligent mobile terminal, as smart mobile phone and panel computer, also can be PC ((personal computer, personal computer).
Further, this humiture observation and control system also comprises ventilation unit 114 and warning device 110; Ventilation unit 114 and warning device 110 are all electrically connected with temperature and humidity filed device; Main frame 12 in temperature and humidity filed device is also for comparing humiture information and parameter preset information, when the result compared reaches alarm threshold, trigger alarm device 110 is reported to the police, and controls the unlatching of ventilation unit 114 and/or the wind speed size of adjustment ventilation unit 114.
Concrete, main frame 12 is after the humiture information receiving humiture probe 11 transmission, also the data value (i.e. humiture information) that each humiture probe 11 gathers is contrasted with preset data value, if the data value of this collection exceedes the alarm threshold (being namely greater than preset data value) pre-set, then main frame 12 can generate alarm command, and report to the police according to this alarm command control warning device 110, simultaneously according to steering logic output switch amount signal, drive ventilating system (as air-conditioning or dehumidifier) work, or change current wind speed, in order to control the humiture in warehouse, if environment reaches predetermined index, then quit work.
Below in conjunction with Fig. 6 and Fig. 7, temperature and humidity filed method provided by the invention is described:
Present invention also offers a kind of temperature and humidity filed method, the above-mentioned temperature and humidity filed device of method carries out, and the method comprises:
S701, main frame obtain the address information of multiple humiture probe, and set up humiture probe information table according to address information.
Concrete, after temperature and humidity filed device powers on, humiture probe arranges the current state of himself and is sent to main frame by arranging rear current state information, obtains current state information to make main frame; Wherein, current state information comprises institute's address information.Now, main frame gets address information, then set up humiture probe information table according to this address information,
Preferably, main frame according to the current state information that humiture is popped one's head in calculate this humiture probe quantity, and be quantity corresponding each humiture probe storage allocation, and according to humiture probe quantity and internal memory, set up humiture pop one's head in information table.
Based on this, this humiture probe information table comprises: each humiture probe and address thereof, and the memory information that this humiture probe is corresponding.
Current humiture information to the request message of the current humiture information of preset address information sending request in humiture probe information table, to make humiture pop one's head according to request message, is sent to main frame by S702, main frame one by one.
Concrete, Fig. 4 gives the frame assumption diagram of custom protocol, and as shown in Figure 4, request message and current humiture data are all undertaken transmitting by the form of frame structure; Concrete, the formation of frame is simply efficient, and totally comprising 4 parts, is frame head (lead code), length, load and verification respectively.Wherein load comprises the data of 17 bytes, comprises probe address, valid data, the time etc.
The current humiture information that each humiture probe sends added up by S703, main frame, carries out control treatment according to humiture information.
Fig. 5 gives the data exchange process (i.e. temperature and humidity filed method) of probe with main frame, below, composition graphs 5 elaborates temperature and humidity filed method provided by the invention:
After many moisture probes power on, complete initialization, comprise the reset of SHT21 sensor, allocation address etc., then enter the state waiting for host access.Complete initialization equally after main frame powers on, main frame initialization procedure comprises the initialization of liquid crystal display, RTC circuit, Flash circuit etc., specifically shows the information such as current storage number and time as liquid crystal display.After main frame initialization completes, to all many moisture probes broadcasts inquiry messages, after many moisture probes receive broadcast, according to the delay algorithm preset, send the current state information of self to main frame.Wherein, time delay adopts Srand (Address) function to produce seed, uses rand () function to produce random number, and using this random number as delay value.Concrete, test shows, when probe is less than 32, its collision rate is lower than 5%.
Main frame is once after obtaining the address information of all many moisture probes, calculate the quantity of many moisture probes, the address list setting up many moisture probes is also each many moisture probes storage allocation, then each probe (being namely send request data to the address in list) is scanned successively according to the address list set up, obtain real time data, until epicycle poll-final.The cycle of each poll can be arranged, and scope is 1s ~ 12 hour, flexible and convenient to use.
Temperature and humidity filed device provided by the invention, system and temperature and humidity filed method, by upper computer software realization to the Long-distance Control of temperature and humidity filed device and management, can realize following function:
1, each many moisture probe humiture real time data inquiry, mean value inquiry;
2, the humiture information of temperature and humidity filed device collection and the inquiry of related information thereof, comprise the information such as stored record number, memory gap and battery allowance;
3, historical record obtains and deletes, and can obtain the record of maximum 60000, and support the whole writing function of erasing;
4, Operation system setting, comprises the parameters such as equipment time, device number, memory gap;
5, homing device.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (10)
1. a temperature and humidity filed device, is characterized in that, comprising:
Multiple humiture probe being arranged at diverse location, for monitoring the humiture information of place environment, wherein, described humiture information at least comprises one of following: temperature, humidity, medial temperature or medial humidity;
Popping one's head in the main frame be all connected with multiple described humiture, for obtaining the humiture information of humiture probe monitors described in each, carrying out control treatment according to described humiture information.
2. temperature and humidity filed device according to claim 1, is characterized in that, described in each, humiture probe includes: Temperature Humidity Sensor and microcontroller; Described microcontroller, the Monitoring instruction for being sent by described main frame converts the steering order of described Temperature Humidity Sensor identification to;
Described Temperature Humidity Sensor, for according to described steering order, gathers temperature and/or the humidity of place environment, and described temperature and/or humidity is sent to described microcontroller.
3. temperature and humidity filed device according to claim 2, is characterized in that, described main frame comprises: the main control unit be connected with described microcontroller, and the information Tip element be connected with described main control unit;
Described main control unit is used for obtaining described temperature and/or humidity from described microcontroller, according to the described temperature computation medial temperature of specified quantity, or calculates medial humidity according to the described humidity of specified quantity; Calculate the related information of described humiture information; The described humiture information that described information Tip element is used for described main control unit to obtain is prompted to user.
4. temperature and humidity filed device according to claim 3, is characterized in that,
Described main frame also comprises: the storage unit be electrically connected with described main control unit, for the threshold parameter of humiture information described in each described humiture probe storage of correspondence and setting; Wherein, described threshold parameter comprises: temperature threshold, humidity threshold;
Described main control unit comprises: comparer, for described humiture information and corresponding described threshold parameter being compared; Ventilation control unit, controls ventilation unit for the comparative result obtained according to described comparer.
5. temperature and humidity filed device according to claim 4, is characterized in that, described main frame also comprises: the time circuit be electrically connected with described main control unit by iic bus, for recording described temperature and/or acquisition time corresponding to humidity;
The crystal oscillator external with described time circuit, for providing basic clock signal for described time circuit; And the standby power supply to be electrically connected with described time circuit, in order to being that described time circuit is powered when abnormal electrical power supply.
6. the temperature and humidity filed device according to claim 3-5 any one, is characterized in that, described main frame also comprises the supply module be electrically connected with described main control unit, and described supply module comprises:
To pop one's head in described main control unit and described humiture respectively the mu balanced circuit be electrically connected, supply voltage for being provided by externally fed equipment is adjusted to described main control unit and the voltage needed for described humiture probe, is described main control unit and the power supply of described humiture probe;
The management of charging and discharging circuit be electrically connected with described mu balanced circuit, and the rechargeable battery be electrically connected with described management of charging and discharging circuit; And the battery capacity indication lamp to be electrically connected with described management of charging and discharging circuit, for lighting when described rechargeable battery charging, be full of rear extinguishing.
7. a humiture observation and control system, is characterized in that, comprises the temperature and humidity filed device according to any one of the claims 1 to 6, also comprises: server and control terminal;
Described temperature and humidity filed device by described server and described control terminal wireless connections, for described humiture information is sent to described control terminal by described server;
Described control terminal receives described humiture information, and controls the duty of described temperature and humidity filed device according to the state of described humiture information.
8. humiture observation and control system according to claim 7, is characterized in that, also comprises ventilation unit and warning device;
Described ventilation unit and described warning device are all electrically connected with described temperature and humidity filed device; Described main frame in described temperature and humidity filed device is also for more described humiture information and parameter preset information, when the result compared reaches alarm threshold, trigger described warning device to report to the police, and control the unlatching of described ventilation unit and/or adjust the wind speed size of described ventilation unit.
9. a temperature and humidity filed method, is characterized in that, described method adopts the temperature and humidity filed device according to any one of claim 1 to 6 to carry out, and described method comprises:
Described main frame obtains the address information of multiple described humiture probe, and sets up humiture probe information table according to described address information;
Current humiture information to the request message of the current humiture information of preset address information sending request in described humiture probe information table, to make described humiture pop one's head according to described request message, is sent to described main frame by described main frame one by one;
The current humiture information that each humiture probe sends added up by described main frame, carries out control treatment according to described humiture information.
10. temperature and humidity filed method according to claim 9, is characterized in that, the address information that described main frame obtains described humiture probe comprises:
After described temperature and humidity filed device powers on, described humiture probe arranges the current state of himself and is sent to described main frame by arranging rear current state information, obtains described current state information to make described main frame; Wherein, described current state information comprises address information.
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